摘要
试验以1日龄艾维菌肉仔鸡（公母各半）540只为研究对象，研究一种新型微生态添加剂（肠乐欣2000C）对肉仔鸡生长性能和肠道微生物菌群的影响。试验分为空白对照组（基础日粮组）、抗生素对照组（基础日粮＋10％硫酸粘菌素预混剂100g）、低剂量肠乐欣组（1．0×10^9 cfu·kg-1饲料）、中剂量肠乐欣组（2．0×10^9 cfu·kg-1饲料）、高剂量肠乐欣组（3．0×10^9 cfu·kg-1饲料）5组，试验分O～21、22～42和43～49日龄3个阶段。试验结果表明，肠乐欣2000C可以提高1-49日龄肉仔鸡的日增重，并改善饲料利用效率，其适宜添加量为1．0—2．0×10^9 cfu·kg-1；同时，适量的肠乐欣2000C可显著提高肉仔鸡盲肠内容物中乳酸杆菌的数量（P〈0．05），显著降低粪样中大肠杆菌的数量（P〈0．05）。
This experiment is aimed to study the effect of a new-type probiotics （CLX2000C） on growth perfor- mance and intestinal flora, with 540 one-day old Avain broiler chickens（half male half female） as experimental ob- jects. These animals were divided into five groups randomly： control group （basal diet）, antibiotic group （basal diet＋ 10% Colistin sulfate premix 100 g）, low dosage CLX2000C group（1.0x 10^9 cfu. kg-1 feed）, medium dosage CLX 2000C group（2.0x10^9 cfu. kg-1 feed）, high dosage CLX2000C group（2.0x10^9 cfu·kg-1 feed）. Total experiment phase was divided into three phase： 0-21 d, 22-42 d, 43-49 d. The result showed that CLX2000C could effectively ele- vate daily gain of the test chickens of 1-49 days age, and effectively improve feed efficiency; the best addition dos- age is 1.0x 109-2.0x 109 cfu·kg-1; at the same time, proper amount of CLX2000C could effectively improve the amount of lactobacillus and decrease escherichia coli level（P〈0.05）.
出处
《饲料博览》
2013年第7期6-10,共5页
Feed Review
关键词
微生态添加剂
肉仔鸡
生长性能
肠道菌群
probiotics additives
broiler chicken
growth performance
intestinal flora
